Your view on singularity largely depends on your relationships with John Searle Chinese room argument; I accept it, and do not find Kurzweil views convincing.
We're made of matter, computers are made of matter, where is the difference?
You need to read Searle's works again; his point is actually the opposite - we are machines made out of biological neurons, which seem to have an externally unobservable property of being conscious; we do not know what it is caused by, but we can see today that it is possible to create a simulation of human behavior by means of logical gates. We have no idea if it will have mind or not.
> We're made of matter, computers are made of matter, where is the difference?
That's an odd argument. And actually does not contradict Searle at all.